S&S, CAMSHAFT BALL BEARING. OUTER, FRONT/REAR

S&S, CAMSHAFT BALL BEARING. OUTER, FRONT/REAR

Replaces OEM 8990/A style ball bearing. 

This bearing will fit will fit all models as front & rear outer cam bearings. 

Note: The MoCo has redesigned the Twin Cam rear outer cam bearing from ball to a roller bearing style in 2001. 

This was done to help prevent failing ball bearings on, specifically, rear (=driveside) cams that are heavier loaded. 

This 01-up roller style bearing is a 3-piece design that is more heavy duty than the roller bearing. 

No other parts changed during the bearing changes. 

The early 99-00 style ball bearings will still fit all 99-06 models front & rear. 

Using front & rear ball bearings present no issues on cam driven gears.

Fits: > 99-06 Twin Cam (excl. 2006 Dyna) (NU)